I'm having trouble understanding how the water calc tool works and i feel like im completely missing something. The way i currently understand this is that i have to look at the the water volume from a brew session and manually plug that in to the water calc tool. Then choose the source & target profiles and plug in guesses with minerals until I'm where i want to be. Then i need to do the math to split up the mineral/acid additions between mash and sparge water because it only gives results for the total volume. If I have a recipe built and source water defined, i feel like the water calc tool should pull in all the ingredients and show me what i've got for mash pH. If i then pick a target water it should show me the salts/acid i need to add or subtract to achieve that. Then an entry point for me to deviate from the software recommendations. I use RO water, measured into the HLT and the Mash tun as needed before treatment. I usually treat them the same but they are different volumes and different vessels. I can not have all of the water in one tank prior to treatment. It seems like im doing a lot of simple math and data entry that the software should be doing. What am i missing?